A beam of particles X, Y, and Z passes through an electric field between two charged plates. X is deflected towards the negative plate, Y passes straight through, and Z is deflected towards the positi

In the diagram, there are two charged plates: a positive plate at the top and a negative plate at the bottom.

• Particle X is deflected towards the negative plate. This indicates that X is positively charged, as opposite charges attract.
• Particle Y passes straight through without any deflection. This indicates that Y is neutral (has no charge), as it is not affected by the electric field.
• Particle Z is deflected towards the positive plate. This indicates that Z is negatively charged, as opposite charges attract.

• Protons are positively charged.
• Neutrons are neutral (have no charge).
• Electrons are negatively charged.

• X (positively charged) corresponds to a proton.
• Y (neutral) corresponds to a neutron.
• Z (negatively charged) corresponds to an electron.

The order of particles X, Y, and Z is proton, neutron, and electron.

• A. electron, neutron and proton
• B. electron, proton and neutron
• C. proton, neutron and electron
• D. proton, electron and neutron

Option C matches our findings.

The final answer is $\boxed{\text{C}}$